Intake-valve.



W. AA DOBLE.

INTAKE VALVE.

APPucATloN mw SEPT. 7, m5.

Patented Dec. 5, 1916.

3 SHEETS-SHEEYI lll ATTORNEYS.

WITNESS W. A. DUBLE.

INTAKE vALvE.

l APPLICATION FILED SEPT. 7| I9I5. 1,207,002, Patented Dec. 5, I9l6.

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ATTORNEYS.

WITNESSA W. A. DOBLE.

INTAKE VALVE.

APPLlcMloN FILED SEPT. 7. 1915.

1,207,002 Patented Dec. 5,1916.

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INTAKE-VALVE.

Specification of Letters Patent.

)Patented Dec. 5, 1916.

Original application filed May 12, 1913, Serial No. 766,947. Divided andthis application filed September 7,

To all fio/0m z' may concern:

Be it known that I, IVILLIAM A. DOBLE, a citizen of the United States,and a resident of the city and county of San Francisco, State ofCalifornia, have invent-ed Acertain new and useful Improvements inIntake- Valves, of :which the following is a specification.

This application is a division of application Serial Number 766,917,filed May 12, 1913 in the United States Patent Office, which has maturedinto Patent 1,169,130, Jan. 25, 1916.

The invention relates to intake valves adapted to control the flow ofwater from a reservoir or other source into pipe lines or conduits, andmore particularly to intake valves which are arranged below the surfaceof the water. l

An object of the invention is to provide an intake valve for governingrthe flow of water into a pipe line or conduit.

4 A further object of the invention 1s to provide a controlling valvewhich allows the water to enter the conduit with the least disturbance.

A further object of the invention is to provide an auxiliary valve incombination with the needle valve which operates to sluit oil' the tiowof water" so that the needle and its coacting parts may be readilyremoved when desirable or necessary.

The invention possesses many other objects and advantageous features,which, with the foregoing, will be set forth at length in the followingdescription, where I shall outline in full that form of the inventionwhich I have selected for illustration in the drawings accompanying andforming part of the present specification. The novelty of the 1nventionwill be included in the claims succeeding said description. F rom thisit will be apparent that I do not limit myself to the showing made bysuch drawings and description, as I may adopt many variations within thescope of my invention as set forth in said claims.

Referring to said drawings, Figure 1 is an elevation of the valve,partly in cross section, part thereof being broken away to reduce thesize of the figure. Fig. i), is a fragmentary cross sectional detail ona larger scale of a portion of the structure. Fig. 3 is an elevation ofone valve taken at right angles to the view shown in Fig. 1, showingSerial No. 49,242.

part of the operating mechanism. F ig. l is a plan view of the valveoperating mechanism. Fig. 5 is a fragmentary cross sectional detail ofthe lower part of the cylindrical gate and its seat.

The valve of my invention is particularly adapted to be installed belowthe surface of the water in the reservoir, or adjacent the bottomthereof, so that advantage may be taken of the head of water in thereservoir, and so that a. variation of the level of the water in thereservoir will be substantially innnaterial. The valves are designed notonly to establish or cut off communication between the conduit and thewater supply, but to control the opening, so that the desired amount ofwater may be obtained. 'lhe construction is such that the water entersthe conduit or tunnel with the least disturbance, thereby avoiding to agreat degree eddy currents and the erosion of the concrete lining of thetunnel. The iiow of the water into the tunnel may be controlled by oneor more valves, depending upon the amount of water necessary at thepower plant or upon other consideration.

r1`hc base of each valve is preferably set in concrete for obviousreasons, and is suitably supported and anchored so that it is fixed andpractically permanent. Below the base ring 2 is preferably arranged aquarter turn' elbow which receives the incoming water and directs itinto the tunnel or conduit with the least amount of disturbance, therebyavoiding erosion of the concrete lining. The circular base 2 serves asthe main base for the entire construction and also acts as a support forand carries the lower valve seat 5, which is preferably made in the formof a steel ring.

Supported above the base 2 by the columns (S spaced apartcircumferentially is a cylindrical construction 7, upon which the maincontrolling Yalve or plate 8 is carried, the valve being preferablyformed in the shape of a needle valve. Securely attached to the upperpart of the cylindrical construction 7 is a caisson 9 which extendsabove the level of the water 12 and preferably above the operatingplatform 13. The joint between the needle S and the cylindricalconstruction 7 is securely packed with a suitable packing 11i, held inplace by the usual packing gland, thereby preventing the water fromentering the caisson, allowing the various parts lying iio therein to beaccessible for inspection or repair.

rlhe main needle 8 is preferably formed hollow and is suitably braced onthe interior to withstand the pressure ot the water. rllhe body portionot the needle .is preferably formed cylindrical in shape of the body issuch that the sides thereo1 engage the packing lll lor all positions oitthe needle. rllhe body ot the needle may be provided with a. bronzeacliet 1G to prevent corrosion and to maintain a smooth surface incontact with the packing let, thereby preventing leakage into theinterior of the caisson.

rlhe needle is arranged concentrically with regard to the opening on thebase plate Q, and operates to guide the water smoothly into the elbow 3.The outer surface et the base plate is also preferably curved to reducethe water disturbance as much as possible. Arranged on the needle,preferably at the periphery thereof, is the upper valve seat 17 which,when the needle is lowered, engages the lower valve seat 5, lined on thebase plate. rllhe lower valve seat ring is provided with a groove inwhich a special metal is inserted to malte tight replaceable gate seat.Y

The cylind ical construction T consists of the main cylinder 1S which isattached at its lower end to the column 6 and bolted at its upper end tothe flange of the aisson 9. Arranged within the cylinder 'i8 andpreferably bolted thereto and spaced apart slightly therefrom, is thecylinder 19 to which is attached the gland 2l for holding the packinglet. rllhe cylinder 19 is usually provided on its uppeoil end witha-shoulder against which the frame 22 which supports the needle and itsoperating mechanism rests and to which it is bolted.

Supported on the frame 22 is a cylinder 23, alined with the axis ot theneedle, in which the piston 2li, connected to the needle, is movable.The movement ot the piston 2li is controlled by the valve 25 which ispreferably ot the sliding piston type. The cylinder 23 is provided withtwo conductors 26-27 connecting the` spaces in the cylinder above andbelow the piston with the apertures 28-29 in the valve The valve pistonof the valve 25 is provided with two heads 31-32 which are adapted tosimultaneously close both apertures 2S and 29, thereby locking pistonEll in position. The piston 2d is operated by fluid, preferably oil,under pressure which is introduced into the valve 25 through theconductor 33 into the space lying between the two piston heads 31-32.The oil discharged 'from the cylinder 23 passes out the valve body 25through the conductor Sil which connects with the valve body above andbelow the piston heads 31e-32 respectively. An upward movement and theheight of the valve piston rod or valve steml will place the upper partot cylinder 23 in communication with the oilsupply pipe 33 and the lowerpart in connection with the eX- hanst pipe St, thereby causing thepiston 2% to move downward. fr downward movement ot the valve stemoperates similarly-to cause an upward movement of the piston 2e.. Y y

The valve stem 35 extends upward above the level ot the operatingplatform 13 and is provided adjacent its upper end with means torrotating it, such as the hand wheel 36. This rotary motion is convertedinto a longitudinal motion by means ot the screw threaded portion 37 otthe valve stem engaging in a screw threaded boss 3S, carried by the armrlhe arm 39 is lined upon the rod ell which is secured to and moves withthe piston 2l, and an indicating rodfl attached to rod ll-l or formingan extension thereof, eX- tends above the operating plat-form, toindicate the position ot the needle.

its the hand wheel 36 is rotated in the proper direction5 the valve stem85, due to its engagement with. the boss 38, is moved lipwarch allowingoil under pressure to enter the cylinder 23 above the piston 24e andallowing the oil in the cylinder below the piston to discharge. yTheresulting downward movement ot the piston, operating through the rod lland the arm 39, moves the valve stem 35 dow ward until the vpassages QSand Q9 in the valve body are closed; ln order to close the needle valvecompletely the hand wheel 36 must be rotated until the indicating rodshows that the valve is closed. lt is evident that tor a given rotationot the hand wheel the needle moves a certain distance and is locked inthat position, so that the needle valve may be readily set for anydesired l'low of water. is soon as the needle has moved to the amountprovided for by the rotation of the handv wheel, the Talve is broughtbacl; to the neutral position by the movement ot the piston, so that theactual movement of the needle t'ollows exactly the movement of thevcontrolling valve. The screw threaded portion on the valve stem shouldbe a length at least equal to the full stroke ot the piston 2l, to allowfor the travel of the boss By continuously rotating the hand wheel 36the needle is caused to move continuously, and when the rotation of thehand wheel ceases, the needle is locked in position.

The oil discharged from the cylinder 23 flows through the pipe S-t tothe storage tanl; y

l, whence it is drawn through the conductor eet to the pump l5 andforced into the pressure supply tank The desired pressure is maintainedin tanl; 4G by air, which is pumped in through 'the pipe ll'. All ot'the various conductors and pipes are provided at suitable points withvalves, to control the How of the fluids. The pressure tank` 4:6 is

iio

preferably made of such capacity that in the event of a. failure orbreaking down of the pumping mechanism, there would be suflicient oilunder pressure to allow the operator to close all of the intake valvesin the installation. The pressure is preferably derived from a pumpoperated by an electric motor, which is provided with an automaticpressure control so that the pressure in the tank is automaticallymaintained substantially constant.

Emergency means are provided for shutting the needle valves, should forany reason the pressure fluid system fail to operate. Arrangedinthe'side of the caisson 9 is an inlet controlled by the gate valve 48,which is operated by the hand wheel 49, arranged on the operatingplatform. When this valve 48 is opened the caisson fills with water,'the weight thereof, operating in conjunction with the weight of theneedle, being sulficient to force the needle downward to its seat andclose the intake valve. A centrifu gal pump, driven by the motor 50,draws water through the pipe 51 arranged within the caisson, therebyproviding means for removing any leakage water or any water which hasbeen admitted through valve 4S.

The invention contemplates the combination with the needle valve ofmeans for shutting off the supply of water to the needle valve, o-r fortemporarily controlling the supply, when it is desirable or necessary toremove or repair the needle or any of its coacting parts. These partsrequire repair or replacement at times and when such times occur, theflow of water is shut oil or controlled temporarily by a cylindricalgate surrounding the intake to the needle valve, thereby allowing theneedle to be removed entirely for the purpose of repair if necessary,without interfering with the flow of water for any material time.

Surrounding the cylindrical construction 7 and preferably Iguidedthereby, is a vertically movable cylindrical gate 52, which is supportedon the suspension rods 58. The suspension rods extend upward through theoperating platform and are screw-threaded at their upper ends forengagement with the nuts 54,. The nuts are formed in the shape ofsprocket wheels which are engaged by the chain so that all of the nutsrotate together, thereby causing the cylindrical gate to be raised orlowered evenly. One of the nuts 5a is provided with a hand wheel 56, foroperating the gate. The lower edge of the gate 52 is provided with anupwardly curved flange 57, which, when the gate is raised, constitutesan extension of the main needle, forming a smooth surface to uide thewater. lVhen the gate is lowerec the lower edge thereof engages a seatin the base ring 2, closing the water inlet. The gate 52 is preferablyprovided on its lower inner edge with a ring which seats against thebase ring 2 when the gate is lowered. Means are also provided fortightly sealing the joints between the cylinder gate and the base ringand the cylindrical construction 7 so that all water may be shut outfrom the interior of the valve and the tunnel when it is necessary ordesirable to repair, replace or alter these parts. The inner surface ofthe gate 52 is formed with in inward taper or inclination 7G adjacentthe top and bottom, so that when the gate is closed, a wedge shapedgroove is formed between the gate and the base ring and between the gateand the cylindrical construction. Any slight leakage that may occur maybe effectively stopped by calking the grooves with oakum or some otherfibrous material adapted for that purpose. The grooves or theinclinations of the surface of the gate are preferably forined byforlning the bottom and top portions of the gate thicker than the bodyportion, and by sloping the surface of the body portion inward to meetsuch thickened portion.

Surrounding the entire valve structure and extending upward above thelevel of the water is a grillage 5S which operates to prevent sticks,trees and other foreign substances from entering the valve and findingtheir way into the tunnel and to the hydraulic power apparatus. Theoperating. platform is preferably supported on piers 60 between whichthe grillage is arranged, and trap-doors 5S) are provided in theplatform to allow the accumulated trash to be cleared from the grillage.

ln order to avoid the inrush of water into the tunnel or conduit whenthe main valve is initially opened, I provide a supplemental needlevalve G1, opening into the conduit, which is opened to allo-w theconduit to fill before the main valve is opened. This obviates thedestructive effect that would be produced should the main valve beopened when the conduit is empty.

I claim:

l. An intake valve adapted to be arranged below the level of a body ofwater comprising a base ring, an open structure mounted on said basering, a cylindrical structure arranged on said open structure andadapted to extend above the surface of the water, a needle arrangedwithin said open structure adapted to control the flow of water throughsaid base ring, a cylindrical gate adapted to control the flow of waterthrough said open structure, and means for suspending said gate from thetop of said cylindrical structure.

2. An intake valve comprising a base ring, an open structure mounted onsaid ring, a cylindrical structure arranged above said open structure,aneedle arranged Within said cylindrical structure adapted to be o fimoved to control the opening in said base ring, a cylindrical gate oflarger diameter than said needle adapted to control the flow oi" waterthrough said open structure, and suspension rods for supporting' andoperating said gate.

23. rin intake valve comprising a base ring, an open structure mountedon said ring, a. cylindrical. structure arranged above said openstructure7 a needle valve adapted to be raised and lowered to controlthe flow of water through said base ring, and a cylindrical gate valvesurrounding said cylindrical structure and adapted to be raised andlowered t0 control the flow of water through said open structure, thelower iace of said gate valve being formed with an upwardly flaringflange to 'form an extension o1 the lower face of the needle when bothare raised.

4l. An intake valve comprising a base ring, a cylindrical structurearranged above said base ring7 a plurality of columns arranged betweensaid base ring and said structure, a needle valve adapted to control theflow of water through said base ring, a gate 7alve adapted to controlthe fiow of the water through the spaces between said columns, and meansexterior ot' said cylin drical structure for supporting and operatingsaid gate valve.

An intake valve adapted to bearranged below the level of a body of watercomprising a base ring7 an open structure mounted on said base ring, acyiindrical structure mounted on said open structure and adapted toextend above the level of the water, a needle arranged at the lower endof said cylindrical structure, means for moving said needle to controlthe flow of water through said base ring, a. gate valve7 surroundingsaid cylindrical structure, means for suspending said gate valve fromthe upper portion of said cylindrical structurea and means for varyingthe length of said suspending means to control the flow of water throughsaid open structure.

G. An intake valve adapted to be arranged below the level of a body ofwater comprising a base ring through which water is discharged into aconduit, an open structure mounted on said base ring, a cylindricalstructure mounted on said open structure, a caisson Secured to said openstructure and adapted to extend above the level of the water, a needlehaving a cylindrical body arranged within said cylindrical structure atthe lower ench means for moving` said needle to control Athe iiow ofwater through said base ring, a cylindrical gate surrounding saidcylindrical structure, means for suspending said gate from the top ofsaid caisson, and means for moving said suspending means to control thei flow of water through said open structure.

7. An intake valve adapted t0 be a1'- ranged below the level of a bodyof Water comprising a base ring through which water is discharged into aconduit, an open `sided structure having a top closed against theentrance oi water arranged on said base ring, a needle coacting withsaid base ring to control the iiow of water therethrough, a cylindricalgate adapted to control the flow of water through said open sidedstructure, and rods exterior of said structure for supporting andoperating said gate.

S. An intake valve adapted to be arranged below the level of a body ofwatei; comprising a base ring, a plurality ot' columns spaced apartcircumferentially'on said ring7 a cylindrical structure mounted on saidcolumns, a caisson attached to said structure and adapted to extendabove the level of the water, a needle having a cylindrical bodyarranged within said cylindris cal structurev`r a packing between saidstructure and the body of said needle, means tor moving said needle withrespect to the base ring, means for controlling said needle moving meansarranged above the level of the water, a cylindrical gate surroundingsaid cylindrical structure, and guided there` by, adapted to engage saidbase ring, means for suspending said gate from the top of said caisson,and means arranged above the level oi? the water for moving saidsuspending means to control the flow of Athe water through the spacesbetween said colunins.

9. in an intake valve, a base ring, a needle valve adapted to Acontrolthe flow oi' water through said base ring, a cylindrical gate coactingwith said base ring, the inner face of said gate being inclined inwardadjacent the bottom to coperate with. said base ring to form af taperedannular groove when the gate is in its closed position.

10. ln an intake valve, a base ring, a

vneedle valve adapted. to' control the iow ot water through said basering, a second ring ahned with and spaced apart from 'said base ring anda cylindrical gate adapted to close the opening between said ringstheinner face of saidA gate being inclined inward adjacent the top andbottom to cooperate with said base ring to form tapered grooves when thegate isk in its closed position.

il. An intake valve comprising a base ring, an open structure mounted onsaid ring, a cylindrical structure arranged above said open structure, aneedle arranged within said cylindrical structure adapted to be moved tocontrol the opening in said base ring`r a cylindrical gate adapted tocontrol the How of water through said open structure, means forsuspending said gate Jfrom the upper portion of said cylindricalstrueture, and means for allowing water to flow into said cylindricalstructure.

12. An intake valve Comprising a base ring, an open structure mounted onsaid ring, e cylindrical structure arranged above said open structure, aneedle arranged within said o f'lindrieal structure adapted to be movedto control the opening in said base ring, a cylindrical gate adapted tocontrol the flow oi? water through said open strnc- Gopies of thispatent may be obtained for ve cents each,

ture, means for suspending said gate from the upper portion of Saidcyllndrlcal strueture, means for allowing water to flow lnto lsaidstructure and means for exhausting 1.3

the water 'from said structure.

In teetiinony whereof I have hereunto Het my hand at San Francisco,California, this 30th day of August, 1915.

`WILLIAM A. DOBLE. In presence of H. G. PRosT.

by addressing the Commissioner of Patents,

Washington, D. C.

